net/bnxt: consolidate template table processing

[dpdk.git] / drivers / net / virtio / virtqueue.h

diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h
index a413632..8c8ab98 100644 (file)
--- a/drivers/net/virtio/virtqueue.h
+++ b/drivers/net/virtio/virtqueue.h
@@ -686,7 +686,8 @@ virtqueue_xmit_offload(struct virtio_net_hdr *hdr,
 
 static inline void
 virtqueue_enqueue_xmit_packed(struct virtnet_tx *txvq, struct rte_mbuf *cookie,
-                             uint16_t needed, int can_push, int in_order)
+                             uint16_t needed, int use_indirect, int can_push,
+                             int in_order)
 {
        struct virtio_tx_region *txr = txvq->virtio_net_hdr_mz->addr;
        struct vq_desc_extra *dxp;
@@ -722,6 +723,25 @@ virtqueue_enqueue_xmit_packed(struct virtnet_tx *txvq, struct rte_mbuf *cookie,
                /* if offload disabled, it is not zeroed below, do it now */
                if (!vq->hw->has_tx_offload)
                        virtqueue_clear_net_hdr(hdr);
+       } else if (use_indirect) {
+               /* setup tx ring slot to point to indirect
+                * descriptor list stored in reserved region.
+                *
+                * the first slot in indirect ring is already preset
+                * to point to the header in reserved region
+                */
+               start_dp[idx].addr  = txvq->virtio_net_hdr_mem +
+                       RTE_PTR_DIFF(&txr[idx].tx_packed_indir, txr);
+               start_dp[idx].len   = (needed + 1) *
+                       sizeof(struct vring_packed_desc);
+               /* reset flags for indirect desc */
+               head_flags = VRING_DESC_F_INDIRECT;
+               head_flags |= vq->vq_packed.cached_flags;
+               hdr = (struct virtio_net_hdr *)&txr[idx].tx_hdr;
+
+               /* loop below will fill in rest of the indirect elements */
+               start_dp = txr[idx].tx_packed_indir;
+               idx = 1;
        } else {
                /* setup first tx ring slot to point to header
                 * stored in reserved region.
@@ -767,6 +787,15 @@ virtqueue_enqueue_xmit_packed(struct virtnet_tx *txvq, struct rte_mbuf *cookie,
 
        start_dp[prev].id = id;
 
+       if (use_indirect) {
+               idx = head_idx;
+               if (++idx >= vq->vq_nentries) {
+                       idx -= vq->vq_nentries;
+                       vq->vq_packed.cached_flags ^=
+                               VRING_PACKED_DESC_F_AVAIL_USED;
+               }
+       }
+
        vq->vq_free_cnt = (uint16_t)(vq->vq_free_cnt - needed);
        vq->vq_avail_idx = idx;